CN103628474A - Manufacturing method for connecting hollow prestressed square piles by using bolts - Google Patents
Manufacturing method for connecting hollow prestressed square piles by using bolts Download PDFInfo
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- CN103628474A CN103628474A CN201210308229.2A CN201210308229A CN103628474A CN 103628474 A CN103628474 A CN 103628474A CN 201210308229 A CN201210308229 A CN 201210308229A CN 103628474 A CN103628474 A CN 103628474A
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Abstract
The invention relates to a manufacturing method for connecting hollow prestressed square piles by using bolts. The manufacturing method is applied to the process of pile sinking, the second section pile and the first section pile need to be connected, and then pressure continues to be exerted downwards. According to the manufacturing method, the technology that a mechanical method is used for connecting the piles is directly adopted, and connecting flanges combined with the bolts only need to be adopted in pile heads needing to be connected. According to the problems existing in a traditional end plate welding method for the hollow prestressed concrete square piles and a pulp anchor method used in the pile connecting process, the mechanical bolt connecting technology can be applied to the hollow square pile connecting construction, and therefore the construction speed is increased and the manufacturing method can be popularized and applied in similar projects.
Description
Technical field
The invention belongs to building field, be specifically related to the preparation method that a kind of mechanical method of direct employing connects the bolt connection pre-stress hollow square pile of stake.
Background technology
When pile extension is very long, because pile-driver tower height is limited, can only prefabricate, segmentation squeezes into, or in pile driving process, when stake is actual, the length of burying is greater than stake during every joint length, i.e. first segment stake beat to stake, lean near the ground, but still do not meet the pile penetration requirement of design code, second section stake and first segment stake need be coupled together, then continue downward injection (pressure), in piling process by stake spreading.The reliability of the joint of stake is very important, must guarantee that joint has enough intensity.The joint of reinforced concrete pile generally adopts welding steel joint, and pile extension method has Jointing, flange pile extension and slurry anchor method.Jointing is that its surface should keep clean at upper and lower two joint stake Si Jiao side, end and the pre-buried mild steel steel plates of end face.When joint stake is instantly beaten to the operation height of being convenient to welding (apart from ground 1m left and right, should make pile top avoid pan soil interlayer) simultaneously, upper joint stake is sling with pile frame, aim at lower joint pile crown.With instrument, two mutual correction for direction verticality in 90 °, tamp and weld with the pre-buried iron plate of stake end face with iron plate at uneven place, play movement.Check errorless after, with spot welding, four jiaos of connecting angles and pre-embedded steel slab are welded temporarily, again check after position and verticality, immediately by two welder diagonal angle symmetrical weldings, in welding, should prevent that node from causing that because thermal stresses produces welding deformation end body is crooked.Welding should be full continuously, and should shorten weld interval as far as possible, to prevent fixed phenomenon.Jointing is applicable to all kinds of soil layers.Be applicable to that bearing capacity of single pile is high, slenderness ratio is large, pile foundation is intensive or must be through certain thickness compared with hardpan, the more difficult stake of pile sinking.When preformed pile adopts static pressure type square pile, the joint of stake can adopt slurry anchor method pile extension (also claiming sulphide mastic bonding), and joint is that the anchor hole that dowel inserts lower joint stake is stretched out in upper joint stake, and pours into the sulphide mastic of fusing, is secure bond after cooling.This joint design is simple, less expensive, but its on-the-spot mixing quality is subject to human factor large, and effect is also to be tested.
Summary of the invention
For the problems referred to above, main purpose of the present invention is that the bolt that provides a kind of mechanical method of direct employing to connect stake connects the preparation method of pre-stress hollow square pile.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of bolt connects the preparation method of pre-stress hollow square pile, and the method comprises the steps:
(1). prepare two flanged plates: on two flanged plates, be all equipped with some bolts hole;
(2). prepare upper head plate: on having, be with sprocket hole on upper head plate, upper head plate is a foursquare metal sheet, the center of foursquare metal sheet is provided with circular hole, between upper band sprocket hole and upper circular hole, be also provided with welding plate, described upper welding plate is welded to connect in upper head plate and flanged plate;
(3). prepare bottom plate: on bottom plate, have lower band sprocket hole, bottom plate is a foursquare metal sheet, the center of foursquare metal sheet is provided with lower circular hole, between lower band sprocket hole and lower circular hole, be also provided with lower welding plate, described lower welding plate is welded to connect another piece in bottom plate and flanged plate;
(4). adopt screw rod to connect by bolt hole two flanged plates, the position that screw rod exposes bolt hole is provided with bolt;
(5). on described upper head plate, be connected with joint stake, on described bottom plate, be connected with lower joint stake, joint stake in lifting, upper joint stake is alignd with lower joint stake, then adopt bolt temporary fixed, in the time of should basseting on lower joint stake top on the spot at least 1m during pile extension, carry out, and the axis of joint stake and lower joint is overlapped;
(6). the bolt described in step (4) is tightened one by one, after hammering for several times, bolt is tightened one time again, then spot welding or screw thread dabbing is fixed, finally brushing pitch is blue or green paints, and all fill up mastic asphalt in the gap of upper welding plate and flanged plate welding, and all fill up mastic asphalt in the gap of lower welding plate and flanged plate welding.
In specific embodiments of the invention, described step adds the spring washer of bolt looseness while preventing hammering or is welded with after (6).
In specific embodiments of the invention, in described step (2), the 1/3-1/2 that the diameter range of upper circular hole is the square length of side, upper band sprocket hole is 12, described upper band sprocket hole is evenly distributed on foursquare four limits.
In specific embodiments of the invention, in described step (3), the 1/3-1/2 that the diameter range of lower circular hole is the square length of side, upper band sprocket hole is 12, described lower band sprocket hole is evenly distributed on foursquare four limits.
Positive progressive effect of the present invention is: the preparation method who the invention provides bolt connection pre-stress hollow square pile has the following advantages: the present invention is a kind of being applied in pile driving process, second section stake and first segment stake need be coupled together, then continue downward injection (pressure); The present invention directly adopts mechanical means to connect the technology of stake, and the pile crown that only need connect at needs adopts adpting flange described in the invention joint bolt; The present invention is directed to the problem that pre-stressed concrete hollow square stake tradition end plate welding and slurry anchor method pile extension exist, proposition can be applied to mechanical bolt link technique hollow square pile pile connection construction, has improved speed of application, can in similar engineering, be applicable.
Accompanying drawing explanation
Fig. 1 is the structural representation of upper head plate.
Fig. 2 is the structural representation of bottom plate.
Fig. 3 is the structural representation of flanged plate.
Fig. 4 is upper head plate is connected structure elevation with flanged plate.
Fig. 5 is the present invention's overall structure schematic diagram in use.
The specific embodiment
Below in conjunction with accompanying drawing, provide preferred embodiment of the present invention, to describe technical scheme of the present invention in detail.Fig. 1 is the structural representation of upper head plate, and Fig. 2 is the structural representation of bottom plate, and Fig. 3 is the structural representation of flanged plate.As Figure 1-3: flanged plate 8 comprises two: on two flanged plates 8, be all equipped with some bolts hole 81, on upper head plate 2, have and be with sprocket hole 1, upper head plate 2 is a foursquare metal sheet, the center of foursquare metal sheet is provided with circular hole 21, between upper band sprocket hole 1 and upper circular hole 21, be also provided with welding plate 3, upper welding plate 3 is welded to connect in upper head plate 2 and flanged plate 8, on bottom plate 5, have lower band sprocket hole 4, bottom plate 5 is a foursquare metal sheet, the center of foursquare metal sheet is provided with lower circular hole 51, between lower band sprocket hole 4 and lower circular hole 51, be also provided with lower welding plate 6, lower welding plate 6 is welded to connect another piece in bottom plate 5 and flanged plate 8,
Fig. 4 is upper head plate is connected structure elevation with flanged plate.Fig. 5 is the present invention's overall structure schematic diagram in use, adopts screw rod 9 to connect by bolt hole 81 two flanged plates 8, and the position that screw rod 9 exposes bolt hole 81 is provided with bolt 7;
On upper head plate 2, be connected with joint stake 100, on bottom plate 5, be connected with lower joint stake 200, joint stake 100 in lifting, upper joint stake 100 is alignd with lower joint stake 200, then adopt bolt 7 temporary fixed, in the time of should basseting on lower joint stake 200 tops on the spot at least 1m during pile extension, carry out, and the axis of joint stake 100 and lower joint 200 is overlapped; Conservative in practice is a bit that distance is the 2m that bassets.
Above-mentioned bolt 7 is tightened one by one, after hammering for several times, bolt 7 is tightened one time again, then spot welding or screw thread dabbing is fixed, finally brushing pitch is blue or green paints, and all fill up mastic asphalt in upper welding plate 3 and the gap of flanged plate 8 welding, and all fill up mastic asphalt in lower welding plate 5 and the gap of flanged plate 8 welding.In concrete enforcement, after above-mentioned steps, add the spring washer of bolt looseness while preventing hammering or be welded with.
In concrete enforcement, the 1/3-1/2 that the diameter range of upper circular hole 21 is the square length of side, upper band sprocket hole 1 is 12, upper band sprocket hole 1 is evenly distributed on foursquare four limits.In the example showing at Fig. 1, be about 1/2, also can select as required other value scope.
In concrete enforcement, the 1/3-1/2 that the diameter range of lower circular hole 51 is the square length of side, upper band sprocket hole 4 is 12, lower band sprocket hole 4 is evenly distributed on foursquare four limits.In the example showing at Fig. 2, be about 1/2, also can select as required other value scope.
Pile extension of the present invention adopts flange bolt to connect, and this pile extension pattern is easy to be reliable, and a pile only needs to connect for 20 minutes.The problem occurring in piling, is mainly lower joint stake while first squeezing into, and corner connection place of minority flange has a little distortion, and this problem can be solved by improving dolly.
The present invention is applied in pile driving process, second section stake and first segment stake need be coupled together, then continue downward injection (pressure); The present invention directly adopts mechanical means to connect the technology of stake, and the pile crown that only need connect at needs adopts adpting flange described in the invention joint bolt; The present invention is directed to the problem that pre-stressed concrete hollow square stake tradition end plate welding and slurry anchor method pile extension exist, proposition can be applied to mechanical bolt link technique hollow square pile pile connection construction, has improved speed of application, can in similar engineering, be applicable.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. bolt connects a preparation method for pre-stress hollow square pile, it is characterized in that: the method comprises the steps:
(1). prepare two flanged plates (8): on two flanged plates (8), be all equipped with some bolts hole (81);
(2). prepare upper head plate (2): on upper head plate (2), have upper band sprocket hole (1), upper head plate (2) is a foursquare metal sheet, the center of foursquare metal sheet is provided with circular hole (21), between upper band sprocket hole (1) and upper circular hole (21), be also provided with upper welding plate (3), described upper welding plate (3) is welded to connect in upper head plate (2) and flanged plate (8);
(3). prepare bottom plate (5): on bottom plate (5), have lower band sprocket hole (4), bottom plate (5) is a foursquare metal sheet, the center of foursquare metal sheet is provided with lower circular hole (51), between lower band sprocket hole (4) and lower circular hole (51), be also provided with lower welding plate (6), described lower welding plate (6) is welded to connect another piece in bottom plate (5) and flanged plate (8);
(4). adopt screw rod (9) to connect by bolt hole (81) two flanged plates (8), the position that screw rod (9) exposes bolt hole (81) is provided with bolt (7);
(5). on described upper head plate (2), be connected with joint stake (100), on described bottom plate (5), be connected with lower joint stake (200), joint stake (100) in lifting, upper joint stake (100) is alignd with lower joint stake (200), then adopt bolt (7) temporary fixed, in the time of should basseting on lower joint stake (200) top on the spot at least 1m during pile extension, carry out, and joint stake (100) is overlapped with the axis of lower joint (200);
(6). the bolt (7) described in step (4) is tightened one by one, after hammering for several times, bolt (7) is tightened one time again, then spot welding or screw thread dabbing is fixed, finally brushing pitch is blue or green paints, and all fill up mastic asphalt in upper welding plate (3) and the gap of flanged plate (8) welding, and all fill up mastic asphalt in lower welding plate (5) and the gap of flanged plate (8) welding.
2. bolt according to claim 1 connects the preparation method of pre-stress hollow square pile, it is characterized in that, described step adds the spring washer of bolt looseness while preventing hammering or is welded with after (6).
3. bolt according to claim 1 connects the preparation method of pre-stress hollow square pile, it is characterized in that, in described step (2), the 1/3-1/2 that the diameter range of upper circular hole (21) is the square length of side, upper band sprocket hole (1) is 12, and described upper band sprocket hole (1) is evenly distributed on foursquare four limits.
4. bolt according to claim 1 connects the preparation method of pre-stress hollow square pile, it is characterized in that, in described step (3), the 1/3-1/2 that the diameter range of lower circular hole (51) is the square length of side, upper band sprocket hole (4) is 12, and described lower band sprocket hole (4) is evenly distributed on foursquare four limits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210308229.2A CN103628474A (en) | 2012-08-27 | 2012-08-27 | Manufacturing method for connecting hollow prestressed square piles by using bolts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210308229.2A CN103628474A (en) | 2012-08-27 | 2012-08-27 | Manufacturing method for connecting hollow prestressed square piles by using bolts |
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| CN103628474A true CN103628474A (en) | 2014-03-12 |
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| CN201210308229.2A Pending CN103628474A (en) | 2012-08-27 | 2012-08-27 | Manufacturing method for connecting hollow prestressed square piles by using bolts |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350529A (en) * | 2015-10-12 | 2016-02-24 | 江苏科技大学 | Pile extension device for lengthening pile leg |
| CN106400781A (en) * | 2016-11-04 | 2017-02-15 | 宁波大学 | Prefabricated reinforced concrete pile provided with plastic bushing and prefabricating method of prefabricated reinforced concrete pile |
| CN107989029A (en) * | 2017-11-24 | 2018-05-04 | 华中科技大学 | A kind of stake is connected system and its construction method with stake |
| CN108221974A (en) * | 2017-12-19 | 2018-06-29 | 山西云度知识产权服务有限公司 | A kind of pre- rounding staking pilework of assembled architecture |
| CN108457268A (en) * | 2018-04-28 | 2018-08-28 | 中交航局第工程有限公司 | A kind of piling bar afloat joining limiter and its application method |
| CN108625359A (en) * | 2018-07-20 | 2018-10-09 | 中铁七局集团第二工程有限公司 | A kind of prefabricated GFRP pipe concretes hollow splicing stake |
| CN108661045A (en) * | 2018-07-20 | 2018-10-16 | 东北大学 | A kind of prefabricated GFRP pipe concretes spliced pile |
| CN109024562A (en) * | 2018-10-29 | 2018-12-18 | 中南大学 | A kind of long prefabricated tubular pile of major diameter and its construction method of classification propulsion |
| CN113653044A (en) * | 2021-08-10 | 2021-11-16 | 大成科创基础建设股份有限公司 | Construction method of deep soft soil pipe pile |
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| JPH08260455A (en) * | 1995-03-22 | 1996-10-08 | Satake Tekko Kk | Joint structure of concrete pile |
| CN1425831A (en) * | 2003-01-10 | 2003-06-25 | 颜肖鸿 | Butt device for prefabricated concrete pile and its producing method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350529A (en) * | 2015-10-12 | 2016-02-24 | 江苏科技大学 | Pile extension device for lengthening pile leg |
| CN106400781A (en) * | 2016-11-04 | 2017-02-15 | 宁波大学 | Prefabricated reinforced concrete pile provided with plastic bushing and prefabricating method of prefabricated reinforced concrete pile |
| CN107989029B (en) * | 2017-11-24 | 2023-09-15 | 华中科技大学 | Pile-to-pile connection system and construction method thereof |
| CN107989029A (en) * | 2017-11-24 | 2018-05-04 | 华中科技大学 | A kind of stake is connected system and its construction method with stake |
| CN108221974A (en) * | 2017-12-19 | 2018-06-29 | 山西云度知识产权服务有限公司 | A kind of pre- rounding staking pilework of assembled architecture |
| CN108457268A (en) * | 2018-04-28 | 2018-08-28 | 中交航局第工程有限公司 | A kind of piling bar afloat joining limiter and its application method |
| CN108457268B (en) * | 2018-04-28 | 2023-12-26 | 中交一航局第一工程有限公司 | Steel pile water butt joint limiter and use method thereof |
| CN108625359A (en) * | 2018-07-20 | 2018-10-09 | 中铁七局集团第二工程有限公司 | A kind of prefabricated GFRP pipe concretes hollow splicing stake |
| CN108661045A (en) * | 2018-07-20 | 2018-10-16 | 东北大学 | A kind of prefabricated GFRP pipe concretes spliced pile |
| CN108661045B (en) * | 2018-07-20 | 2023-11-24 | 东北大学 | Precast GFRP pipe concrete spliced pile |
| CN109024562A (en) * | 2018-10-29 | 2018-12-18 | 中南大学 | A kind of long prefabricated tubular pile of major diameter and its construction method of classification propulsion |
| CN109024562B (en) * | 2018-10-29 | 2024-03-15 | 中南大学 | Graded-propulsion large-diameter long prefabricated pipe pile and construction method thereof |
| CN113653044A (en) * | 2021-08-10 | 2021-11-16 | 大成科创基础建设股份有限公司 | Construction method of deep soft soil pipe pile |
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Application publication date: 20140312 |